Diethylhexyl Butamido Triazone – UV Filter in Sunscreen
Diethylhexyl Butamido Triazone is a synthetic chemical UV filter used in sunscreen products to protect the skin from harmful UVB radiation.
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Diethylhexyl Butamido Triazone is a synthetic chemical UV filter used in sunscreen products to protect the skin from harmful UVB radiation.
What is Diethylhexyl Butamido Triazone?
Diethylhexyl Butamido Triazone (trade name: Uvasorb HEB; INCI name: Diethylhexyl Butamido Triazone) is a synthetic organic UV filter used primarily in sunscreen formulations and light-protective cosmetic products. It belongs to the category of chemical (organic) UV filters and is approved for use in cosmetic products within the European Union.
Mechanism of Action
Diethylhexyl Butamido Triazone functions as a UVB filter. Its molecular structure absorbs ultraviolet radiation in the UVB spectrum (approximately 280–320 nm) and converts it into harmless thermal energy before it can penetrate deeper layers of the skin and cause cellular damage. This protective mechanism helps to prevent:
- Sunburn (erythema)
- Photoaging (premature skin aging caused by UV exposure)
- DNA damage in skin cells, which may increase the risk of skin cancer
Compared to some other UV filters, Diethylhexyl Butamido Triazone is considered photostable, meaning it degrades very slowly under light exposure and maintains its protective efficacy over an extended period.
Application in Cosmetics and Sun Protection
This UV filter is incorporated into a variety of sun protection products, including:
- Sunscreen creams and lotions with medium to high sun protection factor (SPF)
- After-sun care products
- Daily moisturizers with SPF
- Lip care products with UV protection
According to the EU Cosmetics Regulation (Regulation (EC) No. 1223/2009), Diethylhexyl Butamido Triazone is approved for use in cosmetic products at a maximum concentration of 10% (Annex VI, Entry No. 22). It is frequently combined with other UV filters to provide broader protection against both UVA and UVB radiation.
Safety and Tolerability
Based on current scientific assessments, Diethylhexyl Butamido Triazone is considered safe and well-tolerated for topical application on the skin. Key safety characteristics include:
- Low skin penetration – the substance remains predominantly on the surface of the skin
- No significant endocrine-disrupting potential identified in studies to date
- Rarely reported as a cause of contact allergies or photoallergic reactions
However, individuals with known sensitivities to UV filters or cosmetic ingredients should use caution and consult a dermatologist if any skin reactions occur.
Regulatory Status
In the European Union, Diethylhexyl Butamido Triazone is an approved UV filter for cosmetic products. In the United States, however, it has not yet been recognized by the Food and Drug Administration (FDA) as a generally recognized as safe and effective (GRASE) over-the-counter sunscreen active ingredient, and is therefore not used in sunscreen products marketed in the US. These differences reflect the distinct regulatory frameworks governing sunscreen ingredients in the EU versus the US.
References
- European Commission – Regulation (EC) No. 1223/2009 of the European Parliament and of the Council on cosmetic products, Annex VI: List of UV filters allowed in cosmetic products.
- Schauder S., Ippen H. – Contact and photoallergic reactions to sunscreens. Hautarzt, Springer Medizin Verlag (1997).
- Wang S.Q., Lim H.W. – Current knowledge on photoprotection: benefits and limitations. Journal of the American Academy of Dermatology (2011).
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